One attraction could be display modules.

FORBES: Magazine Article

The machine has a space built into the side of its display that allows you to add in optional 802.11b or Bluetooth wireless modules that slide into that space in the back of the notebook display.

FORBES: Magazine Article

What our man Pascal Brisset did is design a Linux system around a Gumstix Overo Fire computer-on-module, a Vuzix VR920 head-mounted stereoscopic 640 x 480 display (complete with 3D tilt sensor and 3D magnetic compass), WiFi, and Bluetooth modules -- the whole shebang resides in (and on) the eyewear, just the thing for secure telepresence and augmented reality applications (or just extra-private web browsing).

ENGADGET: Homebrew head-mounted Linux system for telepresence, looking silly